Crash Course Psych: Controversy of IntelligenceSo, how many different kinds of intelligence are there? And what is the G-Factor? Eugenics? Have you ever taken an IQ Test? All of these things play into the fascinating and sometimes icky history of Intelligence Testing. In this episode of Crash Course Psychology, Hank talks us through some of the important aspects of that history... as well as Nazis. Hey, I said some of it was icky. (Defining Intelligence, Types, G-Factor, Sherlock Holmes, Intelligence Testing, IQ Scores, Eugenics, Intelligence Controversy)